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Which striation consists of overlapping thick filaments with the m line in the center?
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What is cross bridge cycling?
when the Thick filaments pull the thin filaments toward the center of the sarcomere
What are the 3 sections along the length of sarcomere?
The three sections along the length of a sarcomere are the A band, the I band, and the H zone. The A band is the dark region in the center of the sarcomere that contains both thick and thin filaments, while the I band is the light region at the ends of the sarcomere that contains thin filaments only. The H zone is the region in the center of the sarcomere where only thick filaments are present.
What is located in the center of the thick filaments?
The "M" line.
Which Muscle movement in myosin heads of the thick filaments pull on the thin filaments causing the thin filaments to slide toward the center of the sarcomere?
Flexing of the cross bridge (power stroke)
What happens to a sarcomere when muscle length changes?
1. Arrangement of thick and thin filaments: In each sarcomere two sets of actin filaments extend partway toward the center. The myosin filaments are arranged such that they partially overlap the actin filaments. Myosin heads on each side point away from the center of the sarcomere.2. During contraction, the interaction of myosin heads with the actin filaments pulls the thin filaments toward the center of the sarcomere. The actin and myosin filaments slide past each other.3. Cross-bridges = attachement betwn myosin heads and binding sites on actin filaments.4. When a muscle cell is stimulated, myosin heads are energized by ATP. They attach to adjacent actin filaments, and tilt in a short "power stroke" toward the center of the sarcomere. Each power sroke requires an ATP. With many power strokes in rapid succession, the actin filaments are made to slide past the myosin filaments.
When a muscle is relaxed are there only thin filaments in the center of the sarcomere?
Yep, you got it.
A sarcomere is?
A sarcomere consists of thin and thick filaments arranged so they can slide over each other. The boundary of the sarcomere are the Z lines. Thin filaments extend from the Z lines and overlap with thick filaments in the middle of the sarcomere. The I band is on each side of the Z line where only thin filaments occur. The A band is the length of the thick filaments and is divided into three parts; the zone of overlap is on each end where thin and thick filaments occur, the H band is in the middle and has only thick filaments, and the M line is the center of the A band.
What is a performance center of unusual architecture with a roof made of overlapping shells that looks like two sails?
A performance center of unusual architecture with a roof made of overlapping shells is the Sydney Opera House in Sydney, Australia. It was designed by Danish architect Jorn Utzon.
A performance center of unusual architecture with a roof made of overlapping shells that look like two sails?
A performance center of unusual architecture with a roof made of overlapping shells is the Sydney Opera House in Sydney, Australia. It was designed by Danish architect Jorn Utzon.
1 Describe the ionic events underlying the nerve action potential 2. Describe the steps in cross bridge cycle that produces skeletal muscle contraction.?
thick filaments pulling thin filaments toward the center of the sarcomere
What is the nucleus in a atom?
It's the 'center' of the atom, consists of protons and neutrons.
What parts go in the center of the atom?
Nucleus (and it consists of protons and neutrons).
